对接微信支付
This commit is contained in:
@@ -6,6 +6,19 @@ import { request } from '../lib/api';
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import { buildOrderConfirmUrl } from '../lib/navigation';
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import { isWechatEnv, weixinSdk } from '../lib/weixin';
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function sleep(ms: number) {
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return new Promise((resolve) => setTimeout(resolve, ms));
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}
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async function waitOrderPaid(orderId: string, maxAttempts = 15) {
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for (let i = 0; i < maxAttempts; i += 1) {
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const order = await request<{ payStatus?: string }>('USER_H5', `/trade/orders/${orderId}`);
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if (order.payStatus === 'PAID') return true;
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await sleep(2000);
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}
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return false;
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}
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export default function PayPage() {
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const [params] = useSearchParams();
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const orderId = params.get('orderId') || '';
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@@ -35,6 +48,10 @@ export default function PayPage() {
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setMockMode(false);
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await weixinSdk.init();
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await weixinSdk.pay(result.prepay);
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const paid = await waitOrderPaid(orderId);
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if (!paid) {
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alert('支付结果确认中,请稍后在订单列表查看');
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}
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navigate('/orders?tab=pending_ship');
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return;
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}
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@@ -60,7 +77,7 @@ export default function PayPage() {
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<p className="text-muted body-md" style={{ marginTop: 8 }}>
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{mockMode
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? 'preV1 Mock 模式:点击确认即完成;开启真实支付后将调起微信收银台'
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: '请在微信内完成支付'}
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: '请在微信内完成支付,支付成功后自动跳转'}
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</p>
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<p className="label-md text-muted" style={{ marginTop: 24 }}>订单号 {orderId}</p>
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</div>
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@@ -7,6 +7,7 @@ export interface AppConfig {
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wechatAuthEnabled: boolean;
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wechatPayEnabled: boolean;
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wxAppId: string;
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wxMchId: string;
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/** OSS_ENABLED=true 且 AccessKey/Bucket 齐全时走阿里云直传 */
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ossEnabled: boolean;
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}
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@@ -25,6 +26,7 @@ export function loadAppConfig(env?: Record<string, string | undefined>): AppConf
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wechatAuthEnabled: e.WECHAT_AUTH_ENABLED === 'true',
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wechatPayEnabled: e.WECHAT_PAY_ENABLED === 'true' || e.MOCK_PAY === 'false',
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wxAppId: e.WX_APP_ID ?? '',
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wxMchId: e.WX_MCH_ID ?? '',
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ossEnabled: e.OSS_ENABLED === 'true',
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};
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}
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@@ -21,6 +21,8 @@ WX_MCH_ID=
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WX_MCH_SERIAL_NO=
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WX_MCH_PRIVATE_KEY=
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WX_API_V3_KEY=
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# 微信平台公钥证书 PEM(生产环境必填,用于回调验签;开发可暂留空)
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WX_PLATFORM_CERT=
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WX_PAY_NOTIFY_URL=https://your-domain.com/api/v1/callbacks/wechat/pay
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# 阿里云 OSS(ali-oss@6.x;OSS_ENABLED=true 且下方密钥齐全时生效;否则 Mock 占位 URL)
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@@ -16,6 +16,7 @@ import { AnalyticsModule } from './modules/analytics/analytics.module';
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import { JobsModule } from './jobs/jobs.module';
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import { OpsModule } from './modules/ops/ops.module';
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import { CommonModule } from './modules/common/common.module';
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import { CallbacksModule } from './callbacks/callbacks.module';
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@Module({
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imports: [
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@@ -40,6 +41,7 @@ import { CommonModule } from './modules/common/common.module';
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JobsModule,
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OpsModule,
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CommonModule,
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CallbacksModule,
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],
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})
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export class AppModule {}
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@@ -0,0 +1,10 @@
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import { Module } from '@nestjs/common';
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import { IntegrationsModule } from '../integrations/integrations.module';
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import { TradeModule } from '../modules/trade/trade.module';
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import { WechatPayCallbackController } from './wechat-pay.controller';
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@Module({
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imports: [IntegrationsModule, TradeModule],
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controllers: [WechatPayCallbackController],
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})
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export class CallbacksModule {}
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@@ -0,0 +1,38 @@
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import { Controller, Headers, Inject, Post, Req, Res } from '@nestjs/common';
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import type { Request, Response } from 'express';
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import { TradeService } from '../modules/trade/trade.service';
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import { WECHAT_PROVIDER } from '../integrations/integrations.constants';
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import type { IWechatProvider } from '../integrations/wechat/wechat.interface';
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type RawBodyRequest = Request & { body: Buffer };
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@Controller('callbacks/wechat')
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export class WechatPayCallbackController {
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constructor(
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private readonly tradeService: TradeService,
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@Inject(WECHAT_PROVIDER) private readonly wechat: IWechatProvider,
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) {}
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@Post('pay')
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async payNotify(
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@Req() req: RawBodyRequest,
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@Headers() headers: Record<string, string | string[] | undefined>,
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@Res() res: Response,
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) {
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try {
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const rawBody =
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(req as Request & { rawBody?: Buffer }).rawBody?.toString('utf8') ??
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(typeof req.body === 'string' ? req.body : JSON.stringify(req.body ?? {}));
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const notify = await this.wechat.parsePayNotification(headers, rawBody);
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await this.tradeService.handlePaySuccess({
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orderNo: notify.outTradeNo,
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transactionId: notify.transactionId,
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amountFen: notify.amountFen,
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});
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return res.status(200).json({ code: 'SUCCESS', message: '成功' });
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} catch (err) {
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const message = err instanceof Error ? err.message : '处理失败';
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return res.status(500).json({ code: 'FAIL', message });
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}
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}
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}
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@@ -31,7 +31,10 @@ import type { IOssProvider } from './oss/oss.interface';
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provide: WECHAT_PROVIDER,
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useFactory: (api: WechatApiProvider, disabled: WechatDisabledProvider): IWechatProvider => {
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const cfg = loadAppConfig();
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return cfg.wechatAuthEnabled && cfg.wxAppId ? api : disabled;
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const enabled =
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(cfg.wechatAuthEnabled || cfg.wechatPayEnabled) &&
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(!!cfg.wxAppId || !!process.env.WX_MCH_ID);
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return enabled ? api : disabled;
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},
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inject: [WechatApiProvider, WechatDisabledProvider],
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},
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@@ -1,4 +1,4 @@
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import { Inject, Injectable } from '@nestjs/common';
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import { Inject, Injectable, Logger } from '@nestjs/common';
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import { loadAppConfig } from '@dukang/shared-types';
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import { PrismaService } from '../../common/prisma/prisma.module';
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import { WECHAT_PROVIDER } from '../integrations.constants';
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@@ -7,6 +7,7 @@ import type { IPayProvider, PayOrderResult } from './pay.interface';
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@Injectable()
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export class PayWechatProvider implements IPayProvider {
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private readonly logger = new Logger(PayWechatProvider.name);
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private readonly config = loadAppConfig();
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constructor(
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@@ -18,17 +19,18 @@ export class PayWechatProvider implements IPayProvider {
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if (this.config.mockPay) {
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return { mode: 'mock', externalNo: `MOCK-${Date.now()}` };
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}
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if (!this.wechat.isPayEnabled()) {
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throw new Error('微信支付未配置:请设置 WECHAT_PAY_ENABLED=true 与 WX_MCH_ID 等商户参数');
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}
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if (!openId) {
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throw new Error('微信支付需要用户 openId,请先完成微信授权登录');
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}
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if (!this.wechat.isEnabled()) {
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throw new Error('微信能力未启用,请配置 WECHAT_AUTH_ENABLED 与 WX_APP_ID/SECRET');
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}
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const order = await this.prisma.order.findUnique({ where: { id: orderId } });
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if (!order) throw new Error('订单不存在');
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const amountFen = Math.round(Number(order.payAmount) * 100);
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this.logger.log(`create JSAPI prepay order=${order.orderNo} mchid=${this.wechat.getMchId()}`);
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const prepay = await this.wechat.createJsapiPrepay({
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orderNo: order.orderNo,
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description: `杜康好客订单 ${order.orderNo}`,
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@@ -0,0 +1,69 @@
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import { createDecipheriv, createVerify, timingSafeEqual } from 'crypto';
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export type WechatPayNotifyResource = {
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transaction_id: string;
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out_trade_no: string;
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trade_state: string;
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trade_state_desc?: string;
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amount?: { total?: number; payer_total?: number };
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};
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export type WechatPayNotifyEnvelope = {
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id: string;
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create_time: string;
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event_type: string;
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resource_type: string;
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summary: string;
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resource: {
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algorithm: string;
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ciphertext: string;
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associated_data?: string;
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nonce: string;
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original_type?: string;
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};
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};
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export function decryptPayResource(
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apiV3Key: string,
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associatedData: string,
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nonce: string,
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ciphertext: string,
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): WechatPayNotifyResource {
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const key = Buffer.from(apiV3Key, 'utf8');
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const buf = Buffer.from(ciphertext, 'base64');
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const authTag = buf.subarray(buf.length - 16);
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const data = buf.subarray(0, buf.length - 16);
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const decipher = createDecipheriv('aes-256-gcm', key, Buffer.from(nonce, 'utf8'));
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if (associatedData) {
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decipher.setAAD(Buffer.from(associatedData, 'utf8'));
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}
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decipher.setAuthTag(authTag);
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const decoded = Buffer.concat([decipher.update(data), decipher.final()]);
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return JSON.parse(decoded.toString('utf8')) as WechatPayNotifyResource;
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}
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export function verifyPaySignature(params: {
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platformPublicKeyPem: string;
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timestamp: string;
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nonce: string;
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body: string;
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signature: string;
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}): boolean {
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const message = `${params.timestamp}\n${params.nonce}\n${params.body}\n`;
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const verifier = createVerify('RSA-SHA256');
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verifier.update(message);
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verifier.end();
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const ok = verifier.verify(params.platformPublicKeyPem, params.signature, 'base64');
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if (!ok) return false;
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const ts = Number(params.timestamp);
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if (!Number.isFinite(ts)) return false;
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const skewMs = Math.abs(Date.now() - ts * 1000);
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return skewMs <= 5 * 60 * 1000;
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}
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export function safeEqual(a: string, b: string): boolean {
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const ba = Buffer.from(a);
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const bb = Buffer.from(b);
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if (ba.length !== bb.length) return false;
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return timingSafeEqual(ba, bb);
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}
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@@ -1,8 +1,13 @@
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import { createDecipheriv, createHash, createSign, randomBytes, randomUUID } from 'crypto';
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import { Injectable, InternalServerErrorException, Logger } from '@nestjs/common';
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import { BadRequestException, Injectable, InternalServerErrorException, Logger } from '@nestjs/common';
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import { loadAppConfig } from '@dukang/shared-types';
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import { RedisService } from '../../common/redis/redis.service';
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import type { IWechatProvider, WechatCodeSession, WechatOAuthSession } from './wechat.interface';
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import {
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decryptPayResource,
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verifyPaySignature,
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type WechatPayNotifyEnvelope,
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} from './wechat-pay.util';
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type TokenCache = { accessToken: string; expiresAt: number };
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type TicketCache = { ticket: string; expiresAt: number };
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@@ -21,6 +26,7 @@ export class WechatApiProvider implements IWechatProvider {
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private readonly mchPrivateKey = (process.env.WX_MCH_PRIVATE_KEY ?? '').replace(/\\n/g, '\n');
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private readonly apiV3Key = process.env.WX_API_V3_KEY ?? '';
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private readonly notifyUrl = process.env.WX_PAY_NOTIFY_URL ?? '';
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private readonly platformCert = (process.env.WX_PLATFORM_CERT ?? '').replace(/\\n/g, '\n');
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constructor(private readonly redis: RedisService) {}
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@@ -28,6 +34,21 @@ export class WechatApiProvider implements IWechatProvider {
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return this.config.wechatAuthEnabled && !!this.appId && !!this.appSecret;
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}
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isPayEnabled() {
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return (
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this.config.wechatPayEnabled &&
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!!this.appId &&
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!!this.mchId &&
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!!this.mchSerialNo &&
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!!this.mchPrivateKey &&
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!!this.apiV3Key
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);
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}
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getMchId() {
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return this.mchId;
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}
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buildOAuthUrl(redirectUri: string, state: string, scope = 'snsapi_userinfo') {
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const qs = new URLSearchParams({
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appid: this.appId,
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@@ -131,10 +152,15 @@ export class WechatApiProvider implements IWechatProvider {
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openId: string;
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notifyUrl: string;
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}) {
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if (!this.mchId || !this.mchPrivateKey || !this.apiV3Key) {
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throw new InternalServerErrorException('微信支付商户配置不完整');
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if (!this.isPayEnabled()) {
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throw new InternalServerErrorException(
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'微信支付未配置:请设置 WECHAT_PAY_ENABLED=true、WX_MCH_ID、WX_MCH_SERIAL_NO、WX_MCH_PRIVATE_KEY、WX_API_V3_KEY',
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);
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}
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const notifyUrl = params.notifyUrl || this.notifyUrl;
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if (!notifyUrl) {
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throw new InternalServerErrorException('请配置 WX_PAY_NOTIFY_URL');
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}
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const body = {
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appid: this.appId,
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mchid: this.mchId,
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@@ -147,7 +173,9 @@ export class WechatApiProvider implements IWechatProvider {
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const path = '/v3/pay/transactions/jsapi';
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const payload = JSON.stringify(body);
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const auth = this.signPayRequest('POST', path, payload);
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const res = await this.fetchJson<{ prepay_id?: string }>(`https://api.mch.weixin.qq.com${path}`, {
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const res = await this.fetchPayJson<{ prepay_id?: string }>(
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`https://api.mch.weixin.qq.com${path}`,
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{
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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@@ -155,10 +183,12 @@ export class WechatApiProvider implements IWechatProvider {
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Authorization: auth,
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},
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body: payload,
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});
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},
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);
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if (!res.prepay_id) {
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throw new InternalServerErrorException('微信预支付下单失败');
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}
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this.logger.log(`JSAPI prepay ok mchid=${this.mchId} orderNo=${params.orderNo}`);
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const timeStamp = String(Math.floor(Date.now() / 1000));
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const nonceStr = randomUUID().replace(/-/g, '');
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const packageStr = `prepay_id=${res.prepay_id}`;
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@@ -177,6 +207,61 @@ export class WechatApiProvider implements IWechatProvider {
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};
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}
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async parsePayNotification(
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headers: Record<string, string | string[] | undefined>,
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rawBody: string,
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) {
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if (!this.isPayEnabled()) {
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throw new BadRequestException('微信支付未启用');
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}
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const signature = this.headerValue(headers, 'wechatpay-signature');
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const timestamp = this.headerValue(headers, 'wechatpay-timestamp');
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const nonce = this.headerValue(headers, 'wechatpay-nonce');
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if (!signature || !timestamp || !nonce) {
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throw new BadRequestException('微信回调签名头缺失');
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}
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if (this.platformCert) {
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const valid = verifyPaySignature({
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platformPublicKeyPem: this.platformCert,
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timestamp,
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nonce,
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body: rawBody,
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signature,
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});
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if (!valid) {
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throw new BadRequestException('微信回调验签失败');
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}
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} else {
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this.logger.warn('WX_PLATFORM_CERT 未配置,跳过回调 RSA 验签(仅建议开发环境)');
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}
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const envelope = JSON.parse(rawBody) as WechatPayNotifyEnvelope;
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if (envelope.event_type !== 'TRANSACTION.SUCCESS') {
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throw new BadRequestException(`忽略的事件类型: ${envelope.event_type}`);
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}
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const resource = decryptPayResource(
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this.apiV3Key,
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envelope.resource.associated_data ?? '',
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envelope.resource.nonce,
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envelope.resource.ciphertext,
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);
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if (resource.trade_state !== 'SUCCESS') {
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throw new BadRequestException(`交易未成功: ${resource.trade_state}`);
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}
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return {
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transactionId: resource.transaction_id,
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outTradeNo: resource.out_trade_no,
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tradeState: resource.trade_state,
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amountFen: resource.amount?.total ?? resource.amount?.payer_total ?? 0,
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};
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}
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private headerValue(headers: Record<string, string | string[] | undefined>, key: string) {
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const raw = headers[key] ?? headers[key.toLowerCase()];
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if (Array.isArray(raw)) return raw[0];
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return raw;
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}
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private async getAccessToken(): Promise<string> {
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const cached = await this.redis.getJson<TokenCache>(ACCESS_TOKEN_KEY);
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if (cached && cached.expiresAt > Date.now()) return cached.accessToken;
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@@ -234,6 +319,24 @@ export class WechatApiProvider implements IWechatProvider {
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return `WECHATPAY2-SHA256-RSA2048 mchid="${this.mchId}",nonce_str="${nonce}",signature="${signature}",timestamp="${timestamp}",serial_no="${this.mchSerialNo}"`;
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}
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private async fetchPayJson<T>(url: string, init?: RequestInit): Promise<T> {
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const res = await fetch(url, init);
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const text = await res.text();
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let data: T & { code?: string; message?: string };
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||||
try {
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data = JSON.parse(text) as T & { code?: string; message?: string };
|
||||
} catch {
|
||||
this.logger.error(`WeChat Pay invalid JSON (${res.status}): ${text.slice(0, 300)}`);
|
||||
throw new InternalServerErrorException('微信支付接口响应异常');
|
||||
}
|
||||
if (!res.ok) {
|
||||
const detail = data.message || data.code || text.slice(0, 200);
|
||||
this.logger.error(`WeChat Pay API ${res.status}: ${detail}`);
|
||||
throw new InternalServerErrorException(`微信支付下单失败: ${detail}`);
|
||||
}
|
||||
return data;
|
||||
}
|
||||
|
||||
private async fetchJson<T>(url: string, init?: RequestInit): Promise<T> {
|
||||
const res = await fetch(url, init);
|
||||
const text = await res.text();
|
||||
|
||||
@@ -7,6 +7,14 @@ export class WechatDisabledProvider implements IWechatProvider {
|
||||
return false;
|
||||
}
|
||||
|
||||
isPayEnabled() {
|
||||
return false;
|
||||
}
|
||||
|
||||
getMchId() {
|
||||
return '';
|
||||
}
|
||||
|
||||
private disabled(): never {
|
||||
throw new NotImplementedException('FEATURE_DISABLED');
|
||||
}
|
||||
@@ -34,4 +42,8 @@ export class WechatDisabledProvider implements IWechatProvider {
|
||||
createJsapiPrepay() {
|
||||
return this.disabled();
|
||||
}
|
||||
|
||||
parsePayNotification() {
|
||||
return this.disabled();
|
||||
}
|
||||
}
|
||||
|
||||
@@ -14,9 +14,22 @@ export type WechatOAuthSession = {
|
||||
refreshToken?: string;
|
||||
};
|
||||
|
||||
export type WechatPayNotifyResult = {
|
||||
transactionId: string;
|
||||
outTradeNo: string;
|
||||
tradeState: string;
|
||||
amountFen: number;
|
||||
};
|
||||
|
||||
export interface IWechatProvider {
|
||||
isEnabled(): boolean;
|
||||
|
||||
/** 微信支付是否已配置(商户号 + 证书) */
|
||||
isPayEnabled(): boolean;
|
||||
|
||||
/** 当前商户号(用于日志/排查) */
|
||||
getMchId(): string;
|
||||
|
||||
/** 小程序 code2session */
|
||||
code2Session(code: string): Promise<WechatCodeSession>;
|
||||
|
||||
@@ -32,7 +45,7 @@ export interface IWechatProvider {
|
||||
/** 小程序手机号 code 解密(或调用微信 getPhoneNumber 接口) */
|
||||
getPhoneNumberByCode(code: string, platform: 'mini' | 'h5'): Promise<string>;
|
||||
|
||||
/** 创建 JSAPI 预支付参数 */
|
||||
/** 创建 JSAPI 预支付参数(使用 WX_MCH_ID 统一下单) */
|
||||
createJsapiPrepay(params: {
|
||||
orderNo: string;
|
||||
description: string;
|
||||
@@ -40,4 +53,10 @@ export interface IWechatProvider {
|
||||
openId: string;
|
||||
notifyUrl: string;
|
||||
}): Promise<WechatJsapiPrepayParams>;
|
||||
|
||||
/** 解析并验签支付回调通知 */
|
||||
parsePayNotification(
|
||||
headers: Record<string, string | string[] | undefined>,
|
||||
rawBody: string,
|
||||
): Promise<WechatPayNotifyResult>;
|
||||
}
|
||||
|
||||
@@ -1,15 +1,25 @@
|
||||
import { NestFactory } from '@nestjs/core';
|
||||
import { NestExpressApplication } from '@nestjs/platform-express';
|
||||
import { ValidationPipe } from '@nestjs/common';
|
||||
import { json } from 'express';
|
||||
import { AppModule } from './app.module';
|
||||
import { HttpExceptionFilter } from './common/filters/http-exception.filter';
|
||||
import { ResponseInterceptor } from './common/interceptors/response.interceptor';
|
||||
|
||||
async function bootstrap() {
|
||||
const app = await NestFactory.create<NestExpressApplication>(AppModule);
|
||||
const app = await NestFactory.create<NestExpressApplication>(AppModule, { bodyParser: false });
|
||||
app.setGlobalPrefix('api/v1');
|
||||
app.set('trust proxy', true);
|
||||
app.enableCors({ origin: true, credentials: true });
|
||||
app.use(
|
||||
json({
|
||||
verify: (req, _res, buf) => {
|
||||
if (req.url?.includes('/callbacks/wechat/pay')) {
|
||||
(req as { rawBody?: Buffer }).rawBody = buf;
|
||||
}
|
||||
},
|
||||
}),
|
||||
);
|
||||
app.useGlobalPipes(new ValidationPipe({ transform: true, whitelist: true }));
|
||||
app.useGlobalFilters(new HttpExceptionFilter());
|
||||
app.useGlobalInterceptors(new ResponseInterceptor());
|
||||
|
||||
@@ -222,6 +222,87 @@ export class TradeService {
|
||||
return this.getOrder(userId, orderId);
|
||||
}
|
||||
|
||||
/** 微信支付回调:幂等更新订单为已支付并发券 */
|
||||
async handlePaySuccess(params: {
|
||||
orderNo: string;
|
||||
transactionId: string;
|
||||
amountFen: number;
|
||||
}) {
|
||||
const order = await this.prisma.order.findUnique({ where: { orderNo: params.orderNo } });
|
||||
if (!order) {
|
||||
throw new NotFoundException('订单不存在');
|
||||
}
|
||||
|
||||
if (order.payStatus === 'PAID') {
|
||||
return { orderId: order.id.toString(), alreadyPaid: true };
|
||||
}
|
||||
|
||||
const expectedFen = Math.round(Number(order.payAmount) * 100);
|
||||
if (params.amountFen > 0 && params.amountFen !== expectedFen) {
|
||||
throw new BadRequestException('支付金额与订单不符');
|
||||
}
|
||||
|
||||
const existingLog = await this.prisma.logThirdParty.findFirst({
|
||||
where: {
|
||||
provider: 'WECHAT_PAY',
|
||||
externalNo: params.transactionId,
|
||||
status: 'SUCCESS',
|
||||
},
|
||||
});
|
||||
if (existingLog) {
|
||||
return { orderId: order.id.toString(), alreadyPaid: true };
|
||||
}
|
||||
|
||||
const now = new Date();
|
||||
await this.prisma.$transaction(async (tx) => {
|
||||
const current = await tx.order.findUnique({ where: { id: order.id } });
|
||||
if (!current || current.payStatus === 'PAID') return;
|
||||
|
||||
await tx.order.update({
|
||||
where: { id: order.id },
|
||||
data: {
|
||||
status: 'PENDING_SHIP',
|
||||
payStatus: 'PAID',
|
||||
paidAt: now,
|
||||
payExternalNo: params.transactionId,
|
||||
},
|
||||
});
|
||||
await tx.logThirdParty.create({
|
||||
data: {
|
||||
provider: 'WECHAT_PAY',
|
||||
scene: 'ORDER_PAY',
|
||||
refType: 'ORDER',
|
||||
refId: order.id,
|
||||
externalNo: params.transactionId,
|
||||
amount: order.payAmount,
|
||||
status: 'SUCCESS',
|
||||
},
|
||||
});
|
||||
await tx.commonEvent.create({
|
||||
data: buildOrderStatusEvent({
|
||||
orderId: order.id,
|
||||
fromStatus: 'PENDING_PAY',
|
||||
toStatus: 'PENDING_SHIP',
|
||||
operator: 'WECHAT_PAY',
|
||||
}),
|
||||
});
|
||||
const delivery = await tx.orderDelivery.findUnique({ where: { orderId: order.id } });
|
||||
if (!delivery) {
|
||||
await tx.orderDelivery.create({
|
||||
data: { orderId: order.id, provider: 'MANUAL' },
|
||||
});
|
||||
}
|
||||
});
|
||||
|
||||
const refreshed = await this.prisma.order.findUnique({ where: { id: order.id } });
|
||||
if (refreshed?.payStatus === 'PAID') {
|
||||
await this.benefitService.grantOnOrderPaid(order.id);
|
||||
await this.deliveryProvider.scheduleAutoAdvance(order.id);
|
||||
}
|
||||
|
||||
return { orderId: order.id.toString(), alreadyPaid: false };
|
||||
}
|
||||
|
||||
async listOrders(userId: bigint, tab = 'all', page = 1, pageSize = 20) {
|
||||
const statuses = orderTabToStatuses(tab);
|
||||
const where = {
|
||||
|
||||
Reference in New Issue
Block a user